The page--front.tpl.php code is basically a copy of the page.tpl.php code, Ithink a error in it is unlikely.
here is the site were the page--front.tpl.php code is with some of the css: http://pastebin.com/7KvxtpHe
Thank you
PChuprina
If you put a http://pastebin.com/ link with some of your HTML source, that would be very helpful to provide guidance on the proper CSS selectors :)